Method of pouring steel



A. H. WILLIS.

METHOD OF POURING STEEL.

APPLICATION FILED MAYG, 1920.

1,389,725. PatentedSept. 6,1921.

AHHIIIIIIHHIIIH UV ENTOR UNITED STATES PATENT OFFICE.

'ANDREW HUNTER WILLIS, OF ERIE, PENNSYLVANIA, ASSIGNOR- 'IO NATIONAL FOUNDRY COMPANY, OF ERIE, PENNSYLVANIA, A CORPORATION OF PENN- SYLVANIA.

' METHOD or rename STEEL.

Application filed May 6,

To all whom it may concern:

Be it known that I, ANDREW HUNTER IVILLIS, a citizen of the United States, residin at Erie, in the county of Erie and State of Pennsylvania, have invented new and useful Improvements in the Method of Pouring Steel, of which the following is a specification.

In pouring some metals, particularly steel for casting, diiiiculty is experienced in delivering the steel to the molds with sufficient rapidity to prevent the chilling of the metal. Further it is often'desirable to be able to pour from a smaller ladle in filling molds of different sizes. The present invention per- Inits of the more rapid handling of the steel and a greater flexibility in the handling of the steel.

In carrying out the method two ladles are used having a capacity proportioned to that of the furnace. Preferably one of these ladles is of large capacity and the other of the ladles of smaller capacity so as to give a greater adaptability for different sizes of molds. The metal is poured into one of the ladleswhere one of the ladles is larger than the other preferably into the larger ladle and the ladle into which the metal 18 poured is provided with an opening in the side of its wall below the top of the ladle through which the metal passes into the other of the ladles. One of the important features of the invention is that with this passing of the metal there is also a passing of a portion of the slag so that when the entire heat is poured there will be on each of the ladles a sufficient amount of slag to prevent the chilling of the surface of the metal. In this way the pouring of the metal fromthe furnace is accomplished in the same time as where one ladle is used and the metal is deposited in a plurality of ladles so that the pouring from the ladles is more rapid and consequently can be delivered to the molds at a higher temperature than where it is endeavored to pour the entire heat from a single ladle as is customary. v

I am aware that furnaces have been provided with means whereby a portion of the heat may be deflected from one ladle to another to increase the number of ladles from which the metal may be poured but with these there is a less uniform distribution of the slag and consequently less satisfactory results than with the present invention and Specification of Letters Patent.

Patented Sept. 6, 1921.

1920. Serial No. 379,387.

it also requires specially designed means on the furnace.

I have illustrated the apparatus of my invention in the accompanying drawing wherein" 1 marks the spout from the furnace, 2 a large ladle and 8 a smaller ladle, these ladles it being understood having a capacity in proportion to the furnace. The larger ladle has the usual pouring opening at controlled by a plug 5, the stem 6 extending from the plug 5 to an operating handle 7, the ladle 3 having a pouring opening 8, a plug 9 controlling the opening and a stem 10 ext-ending from the plug. An operating handle 11 is provided for the stem 10. These parts are of ordinary construction. The ladle 2 has an opening 12 through the wall thereof below the top of the ladle and is provided preferably with a spout 13 so as to carry the metal discharged from the open ing 12 into the ladle 3.

As the metal is poured it fills the ladle 2 to the level A and the metal then passes through theopening 12 to the ladle 3 filling this ladle with metal to the line CC. Slag is retained in the ladle 2 to a line above the surface of the metal as at BB and slag is also delivered to the ladle 3 so as to reach the level as D-D, thus preventing the chilling of the surface of the metal in either ladle.

After the filling of the ladles the metal may be poured from both ladles simultaneously and may, therefore, be delivered to the mold at a higher temperature than where a single ladle is used. Further the ladles may be of different sizes so as to better adapt them to the different molds.

lVhat I claim as new is 1. The method of pouring molten metal which consists in pouring the metal into one ladle and discharging a portion of the metal as it is poured from said ladle into second ladle, retaining a portion of the slag in the first-mentioned ladle and delivering a pertilon of the slag to the second-mentioned lad e.

' 2. The method of pouring molten metal which consists in pouring the metal into one ladle and discharging a portion of the metal as it is poured from said ladle into a second ladle, retaining a portion of the slag in the first-mentioned ladle and delivering a portion of the slag to the second-mentioned ladle, the ladles being proportioned to the furnace to receive an entire heat.

8. The method of pouring molten metal which consists in pouring the metal into one ladle and discharging a portion of the metal as it is poured-from said ladle at a point below the top of said ladle into a second ladle retaining a portion of the slag in the firstmentioned ladle and delivering a portion of the slag to the second-mentioned ladle.

4. The method of pouring molten metal which consists in pouring the metal into one ladle and discharging a portion of the metal as it is poured from said ladle into a second ladle, retaining a portion of the slag in the first-mentioned ladle and delivering a portion of slag to the second-mentioned ladle through an opening through the wall of said ladle.

5. The method of pouring molten metal which consists in pouring the metal into one ladle and discharging a portion of the metal as it is poured from said ladle into'a second ladle, retaining a portion of the slag in the ANDREW HUNTER wiLLis. 

